Focus film attachment.



M. A. & JQE. WORTHEN.

FOCUS FILM ATTACHMENT.

APPLICATION FILED FEB. 24. 1915. 1,184,404. Patented May 23,1916.

2 SHEETSSHEET I.

MM Z5 f m 11%; w W fi affozncq MIA. & J. E. WORTHEN.

FOCUS FILM ATTACHMENT.

APPLICATION FILED FEB. 24, 1915.

MARIQN VJORTH'JiQ' AND JOHN E. WFIORTHEN, GE 313E El-UIJE, WASHIILWGTOZ'E'.

FOGUS FILM Specification of Letters letent. E aw 23 I A 'lica'tion filed 'l ebrusry 2 1915. Serial No. is P To all whom it may concern:

Be it known that We, MARION VVORTHEN and Jenn E. dfon'rnnn, citizens of the United Sta "es, residing Cle Elum, in the county of K'ittitas and State oil Washington, have invented a new and useful Focus Film Attachment, of which the following is film camera Without requiring any reconstruction of the camera to permit of its use and which is easily and simply operated.

In the accompanying drawings, Figure l s a, sectional view of our invention with he ottochinent in raised position, the com- .rsbeing: sh Wn partly in elevation; Fig. 2 is :1 similar view with the focus film attachment in lowered or closed position; Fl 3 is a side elevation of the invention, a portion o? the camera heing broken sway to show the catch; Fig. 4 is o View on line -il of Fig. 3'; Fi 5 is a partly sectional and L m-tlv plan view looking down on top oi the camera.

like characters of reference indicate like parts throughout the several views.

Referring to the drswings illustrative of the invention, it will he observed that We provide it member 1 corresponding to the ordinary camera beck except that has an opening i3 of rectangular shape. Camera back member l is removable in the customary munner for the insertion of the film. We provide a novel shutter slide holder 9 which is pivotally attached at its upper end to the upper end of minors back 1. it is slotted For the insertion of a shutter slide 3, as illustrated. fit the lower end of shutter slide holder J is a film chamber having a door 5, pivoted to the chamber at 6. and. adopted to be fastened by catch '3 in closed position. Winding studs or pins 16 of usual construction are provided. adopted to engage in the ends of and support the film spool when inserted in chamber 4, these studs or pins being slidsble Within a limited range.

Shutter slide 3 is mounted with its top and bottom edges projecting into slots 8 and S) in members 10 and 11, respectively, as shown in Fig. 2', and into slot 29; in nier her 12. as shown in Fig. l. Consequently the shutter slide-3 Wholly covers opening in shutter slide holder Openings 13 and 23 substuntiall correspond in size and shape. in 13 in cancersv back incinher 1 is mounted a removable ground glass member let which is retained in place by suitable catches 15 {rictionally its edges, shown in Fig. 1. A side arm 17 I having a notched end adopted to engage 2i fastener 18, as shown in 3, is provided to support slide holder in raised position. Attached to the inner portion of member 1, below slot 21 is it suitable protecting strip 19., of felt or wi -.1: like, as shown in Fig. 1.

ing opening 23, to insure the satisfactory odjustnient of he device when closed. A suitable latch 25: fastens the attachment in closed position, as shown in Fig. 2.

in operation, camera with our attachment is loaded as follows: Catch 7' is re lens-ed and door 5 opened for the insertion of the film roll in film chamber 4. hutter slide 3 is Withdrawn from the device. About three inches oi film may be unrolled from the film roll. The end of the film is inserted through slot in bottom of film chamber (hack of member 11), black side down. /Vhen film appears in shutter opening 23,

the film roll is placed in film chamber 4,

Winding stops are pressed into place to engage the spool, and door is closed and fastened. Thefilm may he slid along the back of the attachment with the fingers, through ope-nin Shutter slide may next be inserted in place, the back. of the attachment lowered and "fastened to member 1 by catch 24. To place the attachment on camera when loaded, place empty reel in upper end of camera. Start end of film which extends out of opening in slot in empty reel. Tor- Winder until No. 1 exposure appears in red glass (which is 10- cutcd in upper left hand corner of shutter slide holder 2 in it position corresponding in location to that in the ordinary czuncro hack.) rs ffocus th fihn, unfasten catch Similar protecting strips 20 are mounted in a. similar relation on shutter slide holder 2 and entirely surroundmeans or side arm 17. Insert ground glass 1%: illustrated in Figs. 1 and 5. Open the lens shutter and focus the object until it eppears clear in ground glass member 14. Tien close lens shutter, remove ground glass 14, lower member 2, fasten with latch 24-, and set lens shutter to the desired time. T o picture is then ready to be taken. linen the exposure has been made, insert shutter slide 3 so as to close opening s3 to exclude light from the lilm, and turn Winder until No. 2 exposure appears in the red gloss. ll hen shutter slide 3 is iii-- serted in the shutter slide holder 52, the atachment can be raised at any time to the .orizontal position, as shown in Fig. 1, to one. But the shutter slide holder 2 must .Je lowered. and fastened, as shown in Fig. 2 and the shutter slide 3 Withdrawn from the attachment When the exposure is made to obiein the picture. The front lens must be closed each time before removing shutter slide.

The invention be adapted to practically any camera. using a cartridge film, and-Will enable the operator to bring out det ils as Well on such a camera as on a plate camera.

l i het We claim is:

be eadily attached to a roll film camera cour prising s. detachable camel-c beck having a focusing opening the em, means pivot-ally ett" cbed to the aforesaid camera back for holding a film end film spool and having a .c-orresoondin focusin evenin a shutter exclbdc light from the film, a ground glass member removably mountable in the cameraback,

and means for retaining the filmholding moons 1n raised or lowered posino film ionising attachment adapted to readily uttuchcd to a roll film camera comprising a camera. back member having an i. A film focusing attachment adapted to 'lation to the film strip to exclude lig n1 '1, ieecoe opening therein, a ground glass member removably mountable in the opening and hav ing means for retaining it in engagement with the camera back, shutter-slide and film holding means pivotally attached to the camera back member and a shutter slide adapted to be inserted over an opening in the camera back member to exclude light from the film, substantially as set forth.

4. A detachable film focusing cttacluncnt comprising a readily detachable camera buck member having a focusing opening therein, a combined shutter-slide and lilm holding member having pivotal attachment to the upper end of said camera back member, means for holding said members in or out of alinement With each other, the shutter slide being adapted to exclude light, focusing means removably mountable in the corners. beck member, and shutter memher, for the purposes set forth.

5. A detachable film focusing attachment waving readily detachable camera back member having a. focusing opening therein, a shutter slide holder pivotelly attached to the end of the aforesaid camera buck member, means for retaining it in either parallel or angular relation to the said member, a shutter slide adapted to be inserted to ex-v clude light from the film, film-holding means, and a ground glass member mounteble in the opening in the camera back member.

A detachable film focusing attachment con'iprising a camera buck member adapted to be readily -.:chcd to a camera of ordinary construction, said member having an opening to receive gi ound lass. a ground glass member adapted to be l'astened in said opening, a combined. shutter slide and film holding means piv tally uttached at its upper end the upper end of the camera back member, and having an opening for the exposure of the film strip, means for retaining e. shutter slide in superposed re therefrom d iriru the focusing of the object on the ground glass member, and means for mounting the film roll and for removing same, substantially as set forth.

In testimony whereof we hereunto aliir ur signatures in the presence of two Witnesses.

ll itnesses l-ln'riruu L" JAR'EON Erna SCIIlVETGI'I/XRT. 

